Long-term drinking of dark tea will affect the body's absorption of lipids, cholesterol and other substances, making it difficult for the body to absorb protein, making it thin. In addition, there is a large amount of tannic acid in dark tea, which can cause iron deficiency anemia in the human body. Because dark tea contains a variety of active substances, it can also cause excitement and insomnia.

1. Causes body weight loss

Dark tea can reduce the body’s absorption of lipid compounds, cholesterol and other substances, and can reduce blood lipids and remove fat. However, it is not suitable for people with malnutrition to drink it for a long time. It will hinder the body's absorption of protein, affect bone development and muscle growth, and make the body thin.

2. Cause iron deficiency anemia

Dark tea contains a large amount of tannic acid. Tannic acid will react with iron to produce a substance that is not easily decomposed, called Iron tannate. Therefore, long-term drinking of black tea will cause a large amount of tannic acid to react with iron, causing a lack of iron in the human body and leading to the symptoms of iron deficiency anemia.

3. It is easy to cause excitement and insomnia

Drinking black tea for a long time will cause the symptoms of insomnia to become more and more serious. Dark tea is a strong tea, which contains more active substances such as theophylline, caffeine, and theobromine, which will cause the human body's blood to enter an excited state, and the human central nervous system will be particularly excited and unable to enter a peaceful sleep state.